Gate Valve API 603
API 603 Gate Valve Standard
Cast Stainless Steel Gate Valve API 603
API 603 specifies Corrosion-Resistant, Bolted Bonnet Gate Valve – Flanged and Butt-Welding Ends. The standard covers corrosion-resistant bolted bonnet gate valve with flanged or butt-weld ends in sizes NPS 1/2 through 24, corresponding to nominal pipe sizes in ASME B36.10M, and Classes 150, 300, and, 600, as specified in ASME B16.34.
These valve are used in applications where a thicker API 600 casting is not needed. However, the wall thickness normally conforms to ANSI B16.34 wall.
Gate Valve Pressure Rating :
- Gate Valve API 603 ASME Class 150
- Gate Valve API 603 ASME Class 200
- Gate Valve API 603 ASME Class 300
- Gate Valve API 603 ASME Class 600
Gate Valve API 603 Features :
- Seat face: Ground and lapped to a smooth finish
- Flexible wedge with low center stem-wedge contact. Wedge is ground and lapped to a smooth finish and closely guided to prevent dragging and seat damage
- Non-rotating stem with precision ACME threads and burnished finish. Double ACME threads for faster operation
- Body and bonnet joint accurately machined
- Each valve is shell, seat and backseat pressure tested per industry standard API 598
- Valve are available with socket weld ends
- Yoke bushing can be lubricated to minimize friction and prolong life of the stem
- Body and bonnet castings are precision machined
- Gland has two-piece construction for easy alignment
- Each valve has a unique certification number that is traceable to the valve certification sheet with includes MTR data, pressure test report, inspection report and certificate of conformance
| DESIGN DESCRIPTIONS |
|---|
| Full Port Design |
| OS&Y, Outside Screw and Yoke |
| BB, Bolted Bonnet |
| Flexible Wedge Fully Guided |
| Choice of Solid or Split Wedge |
| Seat Rings Integral with Body |
| Forged T-Head Stem |
| Rising Stem and Non-Rising Handwheel |
| Flanged or Butt Weldings Ends |
| Available with BG Operator |
| APPLICABLE STANDARDS |
|---|
| Steel Gate Valves, API 603 |
| Steel Valves, ASME b16.34 |
| Face to Face, ASME B16.10 |
| End Flanges, ASME B16.5 |
| Butt Welding Ends, ASME B16.25 |
| Inspection and Test, API 598 |
| PARTS NAME | MATERIAL |
|---|---|
| Body | Stainless Steel ASTM A351 CF8M |
| Bonnet | Stainless Steel ASTM A351 CF8M |
| Stem | AISI – 316 |
| Disc | ASTM A351 CF8M |
| Gland Flange | ASTM A351 CF8M |
| Gland Packing | PTFE (Option: Graphite) |
| Handwheel | Ductile Iron |
| Body/Bonnet Gasket | PTFE (Option: Graphite) |
| Body/Bonnet Bolting | ASTM A193 B8/A194 Gr. 8 |
| Gland Bolt/Nut | ASTM A193 B8/A194 Gr. 8 |
| Yoke Sleeve | Ductile Iron |
Detail Specification
| Size | 1⁄2" - 24" (15mm to 600mm) |
| Valve Design | API 603/ASME B16.34 |
| Flange Dimensions | ASME B16.5 |
| Face to Face Dimensions | ASME B16.10 |
| Nominal Diameter | DN 15 - DN 600 |
| Body | ASTM A351 Gr.CF8M |
| Stem | A182 Gr.F316 |
